Designed specifically for use with RegO® 7590U and 7591U Chek-Lok® Excess Flow Valves. Adapter’s operating handle opens and closes equalizing stem in the Chek-Lok® valve. Eliminates gas flow through Chek-Lok® valve when installing or removing adapter. Use of RegO® adapter ensures proper connections and opening of the check mechanism.
Unit of Measure



  • Built in nylon gasket provides a gas tight seal.
  • Adapter can be installed without depressing the equalizing stem of the Chek-Lok®.
  • Design eliminates the need to slug excess flow feature of Chek-Lok® when removing the adapter.
  • Built in bleeder valve allows controlled discharge of liquid before removing the adapter.


Inlet Connection

N/A 1-5/8" F. NPT

Outlet Connection

N/A 3/4" F. NPT

A. Wrench Hex Flats

N/A 1-3/4" F. NPT

B. Approximate Length

N/A 4-1/8" F. NPT

Product Type

N/A Chek-Lok® Liquid Evacuation Adapter


N/A RegO